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Finding the Fourth Proportional to 145,856.25, 218,784.38 and 47,360.25

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Solution

The fourth proportional to 145,856.25, 218,784.38 and 47,360.25 is: 71,040.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,856.25 : 218,784.38 = 47,360.25 : x
  2. Step 2: Convert to fraction form
    145,856.25/218,784.38 = 47,360.25/x
  3. Step 3: Cross multiply
    145,856.25x = 218,784.38 × 47,360.25
  4. Step 4: Simplify right side
    145,856.25x = 10,361,682,696.09
  5. Step 5: Solve for x
    x = 10,361,682,696.09/145,856.25
  6. Step 6: Final answer
    x = 71,040.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.